5.217 Решите уравнение: a) \(\frac{x}{7}\) = 13; б) \(\frac{144}{k}\) = 12; в) \(\frac{m}{13}\) = 27; г) \(\frac{603}{y}\) = 67.

а) \(\frac{x}{7}\) = 13 x = 13 ⋅ 7 x = 91

б) \(\frac{144}{k}\) = 12 144 = 12k k = \(\frac{144}{12}\) k = 12

в) \(\frac{m}{13}\) = 27 m = 27 ⋅ 13 m = 351

г) \(\frac{603}{y}\) = 67 603 = 67y y = \(\frac{603}{67}\) y = 9

Ответ: a) x = 91; б) k = 12; в) m = 351; г) y = 9.